Tire and rim tool.



N nrirrnio Specification ci' Letters Patent.

Patented "d,

@riginal application led May i0, 181e, Serial No. 233,816. 'avided andthis application filed July e, 193.3.

Serial llo. 2653311.

To all whom t may concern:

Be it known that l, ERNEST S. Reimann, a citizen of the United States,residing at St. Paul, in the county of Ramsey and State of Minnesota,have invented a new and uscful Tire and Rim rliool, oi' which thefollowing i's a specification.

This invention relates to tire and rim tools, and the object is to"provide a novel efficient and convenient means for so contracting therim of e. wheel that the pneumatic or other cushion tire may be placedonto or removed from the rim.

l do not claim that the device herein described is in all casessuficient alone for seid purpose, additional means may in many A ceseshave to be employed in connection with the present device; but as suchcombined use of devices has beenl nlly shown and described in myapplication for United States'Patent, Serial No. 233,8l6, tiled May 10,1918, l need not here' further describe the auxiliary devicennd its usewith the present device, but have simply referred to saidl patent for afull disclosure.

ln the accompanying drawing:

Figure 1 is a side vienT of. a pneumatic rubber tire and the rim holdingit, and my device applied to said rim ior crimpingn it inward at one ofits ends. Fig. 2 is a diametrical section on the line 2 2 in Fig. l.

Referring to the drawing by reference numerels, l designates a pneumaticor other rubber tire normally littedtightly about a demountable rim 2,which is secured on the Wheel (not shown) by any suitable means.

The tire may or may not be of the kind having an inner tube 3 and acasing 1, but as my invention is not dependent on the species of 4tire lwill simply refer to the tire by the numeral l.

rlhe rim 2 has an open ai. which enm ables either one or its ends to besprung inward as et in l1 ig. end wiil thereby cause sleckness in thetire preparetory to separating it from the rim. To thus spring orcontract the rim taires considerable force, especially if the Wheel' ise large one. My device for contracting the rim is therefore composed ofthe following parte,

'lwo pairs of crossed levers 6 are pivote et 7 to form grab-hooks orgrippers with jint oined spring-yoke 9 is a square nut 10, one of saidnuts is provided with right-hand threads the other with left hand.threads, and into seidnuts are threaded the opposite ends of a screw bar11, the letter passing through apertures in the spring yolres 9 andhaving .its middle portion le enlarged and provided with s hole l2 and:i turn-spike i3 therein for turning` the screw-ber by bend.

ln the operation of the device the grippers are placed on the rim inabout the position shown, the screwbei" is then turned until the rim issutliciently contracted to enable the tire to beslipped onto or from therim, either by hand or by the auxiliary ineens disclosed and claimed inmy seid other application.

What claim is:

l. In a device of the class described, tivo pairs oi crossed and at thecrossings pivoted levers forming two grippers, each with angular jawsadapted to grip the rim and. with hooks at the other ends of' thelever., tivo Vshaped springs, each of, which has its arms perforated andengaged one with each of the hooks so as to normally tend to close thegrippers; a screw engaged with the bends of the springs to pull themtowardthe center of the rim.

2. The structure speciied in cleim l, seid screw connection comprisingtivo nuts er retained in and b he bend of @zich sprn nud provided om thrightdiend th the 'other with lei bend threads, l the screw heving itsopposite ends threaded to fit in said nuts, and et its middle meanswhich to rotate the screw; said springs r ing each an 'aperture vfor thesrev-ber to pass through and recch the nut.

ln testimony whereof l aftx my signature.

ERNET S. Rllllllilil.

